CN202148905U - Double disk shaped central hob for shield machine - Google Patents
Double disk shaped central hob for shield machine Download PDFInfo
- Publication number
- CN202148905U CN202148905U CN201120258547U CN201120258547U CN202148905U CN 202148905 U CN202148905 U CN 202148905U CN 201120258547 U CN201120258547 U CN 201120258547U CN 201120258547 U CN201120258547 U CN 201120258547U CN 202148905 U CN202148905 U CN 202148905U
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- Prior art keywords
- cutter
- hob
- cutter shaft
- shield machine
- bearing
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- Expired - Fee Related
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Abstract
The utility model relates to a double disk shaped central hob for shield machine. The cutter ring has a hardness of HRC55-58 and a tensile strength of 2000MPa, and is wear-resistant and durable; the phenomenon on cutter body motion, bearing fragmentation or eccentric wear damage is avoided, and the cutter is prevented being out of service in advance due to oil leakage caused by sealing failure; service life is prolonged, and working efficiency is improved; and the hob is convenient and fast to adjust and replace, and the seal and the torque at both ends of the hob can be independently adjusted. The hob is composed of an end cover, a cutter shaft, a cutter body, a cutter ring, a double-face cutter cover, a bearing outer sleeve with a seal, a bearing inner sleeve rolling body and a connecting screw; the cutter shaft is provided with a step in the middle thereof; a step is disposed in a middle hole of the double-face cutter cover; and the step of the cutter shaft is arranged corresponding to the step of the double-face cutter cover. The central hob is simple and compact in structure, convenient to use, safe to operate, time-saving and labor-saving, and accelerates progress of construction; the central hob is stable and reliable, and reduces loss, thereby saving production cost; meanwhile, the central hob reduces labor intensity of workers; moreover, the central hob has low investment and wide application range of construction.
Description
Technical field
The utility model relates to hobboing cutter, especially a kind of shield machine dual disc center hobboing cutter.
Background technology
Along with the high speed development of China's economic construction, be that the construction of tunnel building cause of representative just is surging forward with the subway, like underground warehouse, water conservancy hole letter, large-scale tunnel engineering construction such as highway, railway tunnel, mine laneway are more and more.Shield machine construction method is widely used in the tunnel construction; Disk cutter is the dedicated tool that is used for rock cutting and soil layer on the shield machine; It is installed on the cutterhead and when constructing tunnel the disk cutter cutter ring by in the injection rock soil layer; Cutterhead drive disk cutter under whirligig drives is realized revolution and rotation simultaneously, makes hobboing cutter roll extrusion continuously on the rock soil layer, accomplishes continuous cutting and fragmentation to the rock soil layer; So disk cutter; The load of in work progress, bearing changes with the variation on stratum, and the variation of geological conditions is had very high sensitiveness, so the length of cutter life and the compliance of geological conditions become one of key factor that influences shield machine construction efficient.Shield machine cutter generally can be divided into positive hobboing cutter, center hobboing cutter, scraper, cutting knife, go ahead of the rest cutter and protection cutter etc.The hobboing cutter of installing in the cutter rotary centre is called the center hobboing cutter, and is stressed very complicated because hobboing cutter position, center is special, particularly the easyliest during the ground consisting of hard rock driving causes the cutter hub play, bearing is cracked or eccentric wear damages phenomenon, and application life is short.
At present; " dish type center hobboing cutter; its frame mode is generally at the part of being installed on it on the cutter shaft and makes from the mode that an end penetrates assembling; hobboing cutter sealed at both ends and moment of torsion can not be adjusted separately uses very easily play of middle (center) bearing and cutter hub, and generation damage of bearings seal failure leakage of oil causes shortcomings such as cutter lost efficacy in advance to adopt 17 more than the hobboing cutter of shield machine dish type center, home and abroad.
In view of the foregoing, the dish type center hobboing cutter of shield machine needs to improve.
The utility model content
The purpose of the utility model is in order to overcome deficiency of the prior art, a kind of shield machine dual disc center hobboing cutter to be provided, and cutter ring hardness reaches HRC55-58, and tensile strength reaches 2000MPa, and is wear-resisting, durable; Avoid the cutter hub play, bearing is cracked or eccentric wear damages phenomenon, prevents that the seal failure leakage of oil from causing cutter to lose efficacy in advance; Prolong application life, improved operating efficiency; Adjustment is changed convenient, fast, and the sealing at hobboing cutter two ends and moment of torsion can be adjusted separately.
The utility model adopts following technical scheme to achieve these goals: a kind of shield machine dual disc center hobboing cutter is by end cap, cutter shaft, and cutter hub, cutter ring, the two-edged knife lid, the bearing outside of band sealing, the bearing inner sleeve rolling element, attachment screw constitutes; Columniform cutter shaft two ends are provided with end cap, and the middle part of cutter shaft is provided with two-edged knife lid, and the cutter hub of annular is set respectively between two-edged knife lid and two end caps; The periphery of two cutter hubs is provided with discoidal cutter ring respectively;
Be symmetrical set the bearing outside of two band sealings in each cutter hub side by side, correspondence is provided with the bearing inner sleeve rolling element, the coaxial cutter shaft that is provided with in the bearing inner sleeve rolling element in the bearing outside of each band sealing; Corresponding preformed hole between the end cap at cutter shaft and two ends is provided with attachment screw in the hole.
Described cutter shaft is provided with step in the middle part, in the interstitial hole of two-edged knife lid step is set, the corresponding setting of step that the step of cutter shaft and two-edged knife cover.
The technological process of the utility model is: the utility model is a critical component of shield machine driving; Directly act on the rock face; Through the continuous rotation of cutter head of shield machine, make dish type center hobboing cutter continuously cut face, realize continuous excavation operation.Through combining, its implementation method is the utility model by one group of part: process each part respectively through after the assay was approved according to technical requirement on design earlier, form through assembling and setting.Its detailed process is following:
< 1>manufacturing of cutter shaft; Carbon chromium, molybdenum alloy steel in the cutter shaft material selection are earlier processed blank through forging, then through mechanical roughing, pass through suitable heat treatment again, carry out machine finishing according to custom-designed drawing at last, and be to be assembled through being up to the standards;
< 2>manufacturing of end cap; Carbon chromium, molybdenum alloy steel in the material selection of two end caps are earlier processed blank through forging, then through mechanical roughing, pass through suitable heat treatment again, carry out machine finishing according to custom-designed drawing at last, and be to be assembled through being up to the standards;
< 3>manufacturing of cutter hub; Carbon chromium, aluminium alloy in the cutter hub material selection are earlier processed blank through forging, then through mechanical roughing, pass through suitable heat treatment again, carry out machine finishing according to custom-designed drawing technical requirements at last, and be to be assembled through being up to the standards;
< 4>manufacturing of cutter ring; Cutter ring is the vital part of main rock cutting face, and the main component of its material comprises: C, Mn, Cr, Mo, Si, V and a spot of balance Fe element and some other trace element is formed, and its manufacture process method is: is that steel ingot is processed in melting in 1600 ℃ the smelting furnace with above-mentioned material in temperature; Then carry out blanking, carry out die forging with forging die then and process the cutter ring blank, again blank is carried out full annealing and handle according to the cutter ring needs; When annealing, should workpiece be placed in the stove; Be heated to 870 ℃, then in stove, be incubated 4 hours, and then slowly lower the temperature with the speed of 2 °/min; When temperature is reduced to 730 ℃; Still slowly lower the temperature after being incubated 2 hours again, when cutter ring blank temperature is reduced to 400 ℃, workpiece is moved on to stove continue to be cooled to the normal temperature state in the atmosphere outward with the speed of 2 ℃/min.
With forging good cutter ring blank after annealing heat treatment, carry out rough turning processing, semifinishing earlier, the cutter ring sharp processing is become finished form; Interior garden and end face are reserved allowance for finish; Then cutter ring is carried out special hardening heat treatment, so both guaranteed that the cutter ring parent has enough hardness, intensity and toughness, guarantee that not oxidation of cutter ring cutting edge and dimensional tolerance are constant simultaneously again; Hardness reaches HRC55-58; It is 18-24J/cm2 that impact toughness can reach ak, and tensile strength reaches more than the 2000MPa, satisfies fully and uses life expectancy.
< 5>making of two-edged knife lid; The two-edged knife lid is the same with the material of two end caps; Carbon chromium, molybdenum alloy steel in selecting for use; Earlier process blank through forging, then through mechanical roughing, pass through suitable heat treatment again, carry out machine finishing according to custom-designed drawing at last, to be assembled through being up to the standards;
< 6>making of special bearing; This special bearing is made according to our particular design specially, can carry bigger load, can be combined into the floating seal pair with floating ring again, saves the space, and is effective.
< 7>" the assembling of dish type center hobboing cutter that the hard rock shield machine 17; Treat that above each major part machines through after the assay was approved; Other associated part and outsourcing auxiliary equipment are on deck through after the assay was approved; Carry out assembling and setting by the technical requirements of the drawing of assembling shown in (Fig. 1), through after the assay was approved, this utility model hard rock shield machine 17 " implement to accomplish by dish type center hobboing cutter.
In a word, the technological process of the utility model is accomplished by following steps successively: discharge, blanking, heating, die-forging forming, roughing, semifinishing, the protection of quenching, Quenching Treatment, check, fine finishining, assembling and setting, final inspection, finished product.
The operating principle of the utility model is: it is mainly by end cap, cutter shaft, and cutter hub, cutter ring, the two-edged knife lid, the bearing outside of band sealing, the bearing inner sleeve rolling element,, parts such as attachment screw are formed, the hard rock shield machine that is a kind of brand new is with 17 " dish type center hobboing cutter.Its main fit is that cutter shaft is as support member; End cap and two-edged knife lid is installed above that; Be used to support cutter hub and cutter ring and floating seal etc. with bearing inner sleeve; Be secured together through the connecting bolt assembling, and this center hobboing cutter be installed on the cutter head of shield machine, cutter hub and cutter ring are rotated on cutter shaft through cutter lid and two-edged knife lid; Two cuttves lid is formed annular seal space with a two-edged knife lid and cutter hub and floating seal, and storage lubrication oil is lubricated bearing and the fluctuate hermetical ring in working, and cutter hub is used for installing cutter ring and through cutter ring rock is cut fragmentation.Obviously; The structural strength and the reliability of whole dish type center hobboing cutter are the key factors that influences hard rock shield machine dish type center hobboing cutter working life, and " dish type center hobboing cutter can satisfy full section hard rock shield structure engineering construction needs to the hard rock shield machine 17 of the new structure that we research and develop.
The beneficial effect of the utility model is: simple and compact for structure, easy to use, handling safety saves time, the saving of labor, installs, changes quick easily; Increase work efficiency, accelerated construction progress; Increase the service life, reliable and stable, reduce loss, thereby practiced thrift cost of production, reduced working strength of workers simultaneously; Invest low, the construction application wide scope.
Can be installed to smoothly on the supporting hard rock cutter head of shield machine, its machining accuracy meets the requirements, and its material property and heat treatment process thereof conform to it, and enough intensity, hardness and abrasion resistance are arranged.
The form of structure of its cutter shaft can be protected, and its cutter shaft is characterised in that the middle part is provided with step, and in the two-edged knife lid interstitial hole step is set; And maintenance regulation use level; In assembling process, closely cooperate, make it can not produce displacement in the course of the work, safe and reliable.
The form of structure of its bearing outside can be protected, and the bearing outside of its taper is characterised in that increases its wall thickness, and arranged outside band on small end face is formed sealing pair with fluctuate hermetical ring.
The utility model mainly is applied to 17 " dish type center hobboing cutter internal constructions, and manufacture process and method of hard rock shield machine.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the general assembly structural representation of the utility model;
Fig. 2 is the general assembly structure side view of the utility model;
Fig. 3 is the cutter shaft structure sketch map of the utility model;
Fig. 4 is the cutter shaft structure lateral view of the utility model;
Fig. 5 is the two-edged knife lid structural representation of the utility model;
Fig. 6 is the two-edged knife lid structure side view of the utility model;
Fig. 7 is the process chart of the utility model.
Among Fig. 1,2,3,4,5,6: end cap 1, cutter shaft 2, cutter hub 3, cutter ring 4, two-edged knife lid 5, the bearing outside 6 of band sealing, bearing inner sleeve rolling element 7, attachment screw 8.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain:
As shown in the figure, columniform cutter shaft 2 two ends are provided with end cap 1, and the middle part of cutter shaft 2 is provided with two-edged knife lid 5, and the cutter hub 3 of annular is set respectively between 5 and two end caps 1 of two-edged knife lid; The periphery of two cutter hubs 3 is provided with discoidal cutter ring 4 respectively;
Be symmetrical set the bearing outside 6 of two band sealings in each cutter hub 3 side by side, correspondence is provided with bearing inner sleeve rolling element 7, the coaxial cutter shaft 2 that is provided with in the bearing inner sleeve rolling element 7 in the bearing outside 6 of each band sealing; Corresponding preformed hole between the end cap 1 at cutter shaft 2 and two ends is provided with attachment screw 8 in the hole.
Described cutter shaft 2 is provided with step in the middle part, in the interstitial hole of two-edged knife lid 5 step is set, and the step of cutter shaft 2 and two-edged knife cover 5 the corresponding setting of step.
Claims (3)
1. shield machine dual disc center hobboing cutter is by end cap (1), cutter shaft (2), and cutter hub (3), cutter ring (4), two-edged knife lid (5), the bearing outside (6) of band sealing, bearing inner sleeve rolling element (7), attachment screw (8) constitutes; It is characterized in that: columniform cutter shaft (2) two ends are provided with end cap (1), and the middle part of cutter shaft (2) is provided with two-edged knife lid (5), and the cutter hub (3) of annular is set respectively between two-edged knife lid (5) and two end caps (1); The periphery of two cutter hubs (3) is provided with discoidal cutter ring (4) respectively.
2. a kind of shield machine dual disc according to claim 1 center hobboing cutter; It is characterized in that: the bearing outside (6) that is symmetrical set two band sealings in each cutter hub (3) side by side; The interior correspondence of bearing outside (6) of each band sealing is provided with bearing inner sleeve rolling element (7), the coaxial cutter shaft (2) that is provided with in the bearing inner sleeve rolling element (7); Corresponding preformed hole between the end cap (1) at cutter shaft (2) and two ends is provided with attachment screw (8) in the hole.
3. a kind of shield machine dual disc according to claim 1 center hobboing cutter; It is characterized in that: described cutter shaft (2) is provided with step in the middle part; In the interstitial hole of two-edged knife lid (5) step is set, the corresponding setting of step that the step of cutter shaft (2) and two-edged knife cover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120258547U CN202148905U (en) | 2011-07-21 | 2011-07-21 | Double disk shaped central hob for shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120258547U CN202148905U (en) | 2011-07-21 | 2011-07-21 | Double disk shaped central hob for shield machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202148905U true CN202148905U (en) | 2012-02-22 |
Family
ID=45589968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120258547U Expired - Fee Related CN202148905U (en) | 2011-07-21 | 2011-07-21 | Double disk shaped central hob for shield machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202148905U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352706A (en) * | 2013-05-30 | 2013-10-16 | 大连理工大学 | Method for designing center bigeminal hobs of heading machine |
| CN105443137A (en) * | 2015-12-23 | 2016-03-30 | 洛阳九久科技股份有限公司 | Integral type cutter ring for disc cutter and manufacturing method thereof |
| DE102018108686B3 (en) | 2018-04-12 | 2019-08-14 | Technische Universität Bergakademie Freiberg | Apparatus and methods for impact load transfer to chisel bits of rock working machines |
-
2011
- 2011-07-21 CN CN201120258547U patent/CN202148905U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352706A (en) * | 2013-05-30 | 2013-10-16 | 大连理工大学 | Method for designing center bigeminal hobs of heading machine |
| CN105443137A (en) * | 2015-12-23 | 2016-03-30 | 洛阳九久科技股份有限公司 | Integral type cutter ring for disc cutter and manufacturing method thereof |
| DE102018108686B3 (en) | 2018-04-12 | 2019-08-14 | Technische Universität Bergakademie Freiberg | Apparatus and methods for impact load transfer to chisel bits of rock working machines |
| WO2019196991A1 (en) | 2018-04-12 | 2019-10-17 | Tu Bergakademie Freiberg | Devices and methods for impact load transmission onto disk-shaped drill bits of rock processing machines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20130721 |